Sediment incipient motion in sewer with a bed deposit
Document Type
Article
Publication Date
1-1-2022
Abstract
This paper analyses experimental data on sediment incipient motion with varying sediment bed thickness (of d(50), 5, 10 and 24 mm). Sediment particles (with sizes ranging from 0.5 mm to 4.78 mm) were used to evaluate the effect of deposited bed. Variation of shear velocity estimation was investigated where the critical Shields parameter was expressed using bed-slope product u(*cb), log-law u(*cl )and was extended in terms of critical mean velocity. The critical Shields parameters obtained were significantly lower than the traditional Shields curve when u(*cl) was used compared to u(*cb). Higher critical mean velocity is needed for shallower deposits.
Keywords
Threshold criteria of sediment motion, Shields parameter, Sediment bed thickness
Divisions
fac_eng
Funders
Ministry of Higher Education for the Fundamental Research Grant Scheme[FRGS/1/2018/TK01/UKM/02/4],Universiti Malaysia Sarawak under the MyRA Special Grant Scheme[F02/SpGS/1542/2017]
Publication Title
Teknik Dergi
Volume
33
Issue
1
Publisher
Turkish Chamber Civil Engineers
Publisher Location
SELANIK CAD NO 19-1, KIZILAY, ANKARA 06650, TURKEY